Jamie Oliver fish pie?

A friend once made me this lovely fish pie, you just put the fish in a dish without poaching and topped it with things - I seem to recall spinach was one of the things. I can't find the recipe and friend not around for me to ask. Does anyone know it? Thanks!

Hiya well I made a version of it and it was delish - put chunks of salmon, smoked haddock and cod in a dish, put grated carrot, mushrooms and spinach leaves on top (none of this pre-cooked by the way), dobbed on some creme fraiche, topped with mash and grated cheese, baked in oven for about 30 mins or so. Lovely.